Rome hosts a natural spectacle in the evenings of winter when millions - o.k., I didn't count them - birds arrive to spend the night in the trees flanking the Tiber in Rome's historic center. Amazing, really. Just one advice: Don't park your car anywhere near there.
Unfortunately there is some flicker in some of the footage. The 35mm adapter leaked oil onto the ground glass ruining itself and the film shoot. Grrrr.